Coupons are a highly effective marketing tool. With coupons, merchants can achieve
customer loyalty or attract new customers, and customers can obtain benefits when …

Key agreement refers to two or more entities in negotiations, jointly establish a session key.
The session key is generated by each participant through a certain number of parameters …

Mobile commerce (m-commerce) represents an important area of business with a huge
potential revenue for merchants and great opportunities for customers to achieve better …

Key agreement is a crucial cryptographic primitive for building secure communication
channels between two parties in a network. In the research literature a typical protocol aims …

Nowadays, the application of e-coupons is quite a novel issue but is becoming increasingly
popular among electronic commercial businesses owing to save much money by using the e …

Nowadays chaos theory is widely used in cryptography. In the real world, in order to ensure
secure communication, many chaotic maps-based key agreement protocols have been …

To improve the security of authentication system and strengthen privacy protection in mobile
Internet environment, this paper proposes a provably secure Chebyshev chaotic map (CCM) …

A mobile coupon (m‐coupon) can be presented with a smartphone for obtaining a financial
discount when purchasing a product or a service. M‐coupons are a powerful marketing tool …

In distributed networks, anonymous user authentication is crucial to enable authorized
access and guard privacy. Recently, Lin proposed a chaotic map-based anonymous mobile …

The union of near-field communication (NFC) and mobile devices has led to significant
changes in payment systems over recent years. Currently, NFC-based services are the …